package com.itheima.service;

import com.alibaba.dubbo.config.annotation.Reference;
import com.itheima.pojo.Permission;
import com.itheima.pojo.Role;
import com.itheima.pojo.User;
import org.springframework.security.core.GrantedAuthority;
import org.springframework.security.core.authority.SimpleGrantedAuthority;
import org.springframework.security.core.userdetails.UserDetails;
import org.springframework.security.core.userdetails.UserDetailsService;
import org.springframework.security.core.userdetails.UsernameNotFoundException;
import org.springframework.stereotype.Component;

import java.util.ArrayList;
import java.util.List;
import java.util.Set;

@Component
public class SpringSecurityUserService implements UserDetailsService {

    @Reference
    private UserService userService;

    @Override
    public UserDetails loadUserByUsername(String username) throws UsernameNotFoundException {
        User user = userService.findByUsername(username);
        //用手机号登录
        if(user == null) {
            user = userService.findByTelephone(username);
        }
        //还找不到 就不存在
        if(user == null) {
            return null;
        }

        //把权限取出来赋值放入权限集合
        List<GrantedAuthority> list = new ArrayList<>();
        Set<Role> roles = user.getRoles();
        for (Role role : roles) {
            //授予角色  放入list中
            list.add(new SimpleGrantedAuthority(role.getKeyword()));
            Set<Permission> permissions = role.getPermissions();
            for (Permission permission : permissions) {
                //授予权限 放入list中
                list.add(new SimpleGrantedAuthority(permission.getKeyword()));
            }
        }

        //封装User
        org.springframework.security.core.userdetails.User securityUser
                = new org.springframework.security.core.userdetails.User(user.getUsername(), user.getPassword(), list);

        return securityUser;
    }
}
